Dough-forming machine.



No. 786,879. l .PATENTED APR. 11', 1905. G. P. METZ. DOUGH PORMINGMACHINE. APPLIOATION FILED FEB. 5. 1904.- RENEWED 00'1Q3. 1.904.

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'I Ms i fly" UNITED STATES Patented April 11, 1905.

yPATENT OFFICE.

CHRISTIAN F. DIETZ, OF CHICAGO, ILLINOIS, ASSIGNOR OF TWO-THIRDS TOAUGUST JUNGE, OF CHICAGO, ILLINOIS, AND PHILLIP F. CARROLL,

OF J OLIET, ILLINOIS.

IDOUC-TH-FORNIINGI MACHINE.

SPECIFICATION forming part of Letters PatentITo. 786,879ydatedhAprl 11,1905.

Application led February 5, 1904. Renewed October 3, 1904. Serial No.226,934.

To all whom it may con/cern: i

Be it known that I, CHRISTIAN F. DIETZ, a

citizen of the United States, residing at Clii- 1 cago, in the county ofCook and State of Illi- 5 nois,4 have invented certain new and usefulImprovements in Dough-Forming Machines, of which the following is aspecification.

This invention relates to improvements in that class of bakers'machinery in which Io dough" is formed into loaves either for bread orrolls. The especial objects of my improvements are to provide a machinein which lumps of dough of irregular shape will be given i a 15spherical or semispherical form by drawing the skin or surface of thedough from the top and sides to a common center on the under side of thelump, thus leaving the sides and top of the finished product smooth orwith- 2o out seams or wrinkles.

By a separate application for patent I have shown a machine for moldinglumps of dough into cylindrical and elliptical shapes, and in thepresent invention I utilizein part z 5 some of the principles of saidmachine, but have added thereto novel means by which while drawing downthe skin ofthe dough from opposite sides of the horizontal axis ofl thelump I also rotate or partially rotate the 3o lump on its vertical axis,thus effecting a compound movement which results in a sphericalformation of the lump of dough. In this machine I provide means forholding the lump of dough in frictional contact with 3 5 theforming-rollers and also ada tl the rollers to be separated, whereby theformed loaf may drop into a pan, traveling belt, or other suitabledevice for receiving it when the molding operation is complete.

In the accompanying drawings, which form a part of this application, Ihave shown a preferred embodiment of this invention in the followingviews:

Figure 1 is a side elevation of the machine 45 complete. Fig. 2`is a topplan view, artly in section. Fig. 3 is a vertical sectional view`resents the frame or stand on which the opframe are shafts 2, 3, 4, and5.

through a portion of the hopper and throughI the forming-rollers andscraper.

Referring to the drawings in detail, 1- reperative elements of mymachine are supported and j ournaled, and it consists of two members 1a1b, suitably formed, connected, and braced to provide a rigid support.Suitably journaled in the members la 1b of the 55 On the opposite endsof the shafts 2 and 5, outside the frame, are pinions 2al 2b and 5a 5b,and on the corresponding ends of the shafts 3 4 are pinion's3a 3b and 4a4b. The pinions 4a 4b mesh with and are driven, respectively, by thepinions 5FL 5b, and the pinions 3' 3l mesh with and are driven,respectively, bythe pinions 2a 2b. Near one end of the shaft 5 andinside the frame is mounted a bevel-gear 5, 65 which meshes with and isdriven by a bevelpinion 6b, mounted on a stud-shaft 6at in the l outerend of a bracket 6, which is fixed on the frame member 1a and extendsinwardly.

The pinion 6b is shown provided with a han- 7o dle 6, thus serving as ahand-wheel where manual power is used. If mechanical motorpower isutilized, the shaft 6a will be driven from suitable pulleys mountedthereon or in any other convenient manner. Near the 75 end of the shaft5, opposite the gear 50, a sprocket-wheel 5d is mounted, over whichtravelsy a sprocket-chain 5e, which also travels over and drives asprocket-wheel 2e on the corresponding end of the shaft 2 thustransmitting power from the shaft 5 to the shaft 2. The gearingdescribed serves to drive the shafts 3 4 toward-each other, as indicatedby arrows in Fig. 3.

Slidably splined on the shaft 3 is a roller 7 85 and similarly mountedon the shaft 4 is a complementary roller 8, the diameter of each rollerbeing such that their faces almost touch. Secured to one end of theroller 7 and correspondingly mounted on the shaft 3 9o is a collar 7a,in the face of which a cam- .groove 7 b is cut, and the samearrangement` is provided on the shaft 4 for the roller 8. Mounted on theshaft 2 near its ends and held against endwise movement by set-collars9C 9 are arms 9 9, through the free ends of which the shaft 3 extends.One of these arms is formed with a horizontal extension, as 9e, whichextends over the collar 7 a, and from the free end of which extendsdownwardly a pin (shown by dotted lines) which iits loosely thecam-groove in said collar. The same arrangement is provided on the shaft4 in the arm 10 and extension 101.

Mounted on a shaft 9f, the ends of which are fixed in the arms 9, is ablade 9b, which projects upwardly and has its edge occupying the spacebetween the rollers 7 S, thus serving to scrape from said rollers anydough that might stick to same and also preventing the dough from beingdrawn down between said rollers.

Suitably supported on extensions 1b of the frame is an open hopper 11,the discharge end of which is directly over the rollers 7 S. The hopperis formed with a recess 11L in its rear wall, and in its side walls arecut curved slots 11b 11b. Arranged in the hopper is an arched plate 12,on the upper side of which are perforated lugs 12a, which receive pins12b, that extend through the slots 11b and serve to loosely connect theplate with supporting-arms 13, arranged at the sides of the hopper.These arms are pivoted on ashaft 13a, which extends across the rear ofthe frame. Link 14 is pivotally connected at its upper end to one of thearms 13, and the lower end of this link is likewise connected with theupper arm of the two-arm lever 15, which is pivotally connected with theshaft 3 and mounted on the shaft 2. The lower arm of the lever 15 isslotted, as at 15, to slidingly receive a pin 17, fixed in the upper endof the vertical rod 17, the lower end of which is pivoted at 17b to thehorizontal lever 18, which is in turn pivoted on a shaft 19, whichextends across the frame and has bearings in same.

On one end of the shaft 5 a second twoarm lever 16 is mounted, in theupper arm of which the shaft 4 is journaled. In the lower arm of saidlever is a slot 16a, in which the pin 17 a works. A spiral spring 20connects the upper arms of the two levers 15 16, the tension of saidspring being exerted to draw the said upper arms of the levers towardeach other.

From the construction above described it will be seen that by liftingthe free end of the lever 18 the lower arms of the levers 15 and 16 willbe raised and the upper arms will be thrown outwardly against the.tension of the spring 20, whereby the rollers, the shafts 3 and 4 ofwhich are journaled in the upper arms, will be separated, and thuspermit the dough on the rollers to drop by gravity into any suitablereceptacle that may be placed below said rollers. The same movement ofthe levers 15 16 will, through the link 14 and lever 13, raise the plate12 and throw it into the recessed portion of the hopper, thus leaving anunobstructed passage to the rollers, so that another 4mass of dough maybe thrown onto the rollers to be formed into a loaf.

Upon the driving of the wheel or bevelgear 6b the, rollers 7 S will berotated toward each other, thus drawing downwardly and inwardly the skinor outer-surface dough of the mass placed on the rollers, and therebytending to give a cylindrical form to the dough around a horizontalaxis, and the reciprocating movement of the rollers on their respectiveshafts caused by the pins in the arms 9e 1.0 workingin the cam-grooves 7S" also acts on opposite sides of the dough and tends to rotate same ona vertical axis, thus resulting in producing a loaf in substantiallyspherical form.

The function of the plate 12 is to hold by its weight the dough insuiliciently close frictional contact with the rollers to secure themost effective gripping of the skin or outer surface of the dough.

It will be apparent that various changes may be made in the details ofmy machine without departure from the principles thereof. Hence I do notwish to be limited to the precise construction and combination ofelements shown; but

What I claim, and desire to obtain by Letters Patent, is-

1. In a dough-forming machine, rollers adapted to support a lump ofdough and. mounted to rotate toward each other and also mounted to slidein opposite parallel planes.

2. In a dough-forming machine, contiguously-placed rollers adapted tosupport a lump of dough, mounted to rotate toward each other, and alsoadapted to reciprocate in opposite directions substantially in themanner set forth.

3. In a dough-forming machine, rollers adapted to support a lump ofdough and mounted to rotate toward each other, also adapted to slide inopposite parallel planes, and means for raising said rollers to permitthe lump of dough to drop by gravity.

4. In a dough-forming machine, rollers adapted to support a lump ofdough and mounted to rotate toward each other and to slide in parallelplanes, means for separating said rollers and means for restoring themto their normal position.

5. In a dough-forming machine, rollers adapted to support a lump ofdough and mounted to slide in parallel planes, a plate arranged abovesaid rollers and adapted to IOO lIO

hold the dough in Contact With the rollers, ally restoring the levers totheir normal poand means for operating said plate. sitions. 1o

6. In a doughforming machine rollers In testimony whereof I alliX mysignature adapted to support a lump of dough and in presence of tWoWitnesses.

mounted to slide in parallel planes, pivoted CHRISTIAN F. DIETZ. leverssupporting the journals of said rollers, Witnesses: means for operatingsaid levers to spread WM. B. MOORE,

apart said journals and means for automatio- F. BENJAMIN.

